package com.flrjcx.common.utils;

import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.UUID;

/**
 * 加密工具
 *
 * @author Flrjcx
 */
public class EncryptionUtils {
	/**
	 * 使用md5的算法进行加密
	 */
	public static String md5(String plainText) {
		byte[] secretBytes = null;
		try {
			secretBytes = MessageDigest.getInstance("md5").digest(
					plainText.getBytes());
		} catch (NoSuchAlgorithmException e) {
			throw new RuntimeException("没有md5这个算法！");
		}
		// 16进制数字
		String md5code = new BigInteger(1, secretBytes).toString(16);
		// 如果生成数字未满32位，需要前面补0
		for (int i = 0; i < 32 - md5code.length(); i++) {
			md5code = "0" + md5code;
		}
		return md5code;
	}
	public static String UUID(String name){
		String userId = null;
		UUID uuid = UUID.randomUUID();
		userId = uuid + name;
		return userId;
	}


}